Struct cmsis_dsp_sys_pregenerated::arm_rfft_instance_f32

#[repr(C)]pub struct arm_rfft_instance_f32 {
    pub fftLenReal: u32,
    pub fftLenBy2: u16,
    pub ifftFlagR: u8,
    pub bitReverseFlagR: u8,
    pub twidCoefRModifier: u32,
    pub pTwiddleAReal: *const float32_t,
    pub pTwiddleBReal: *const float32_t,
    pub pCfft: *mut arm_cfft_radix4_instance_f32,
}

@brief Instance structure for the floating-point RFFT/RIFFT function.

Fields

fftLenReal: u32

< length of the real FFT.

fftLenBy2: u16

< length of the complex FFT.

ifftFlagR: u8

< flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform.

bitReverseFlagR: u8

< flag that enables (bitReverseFlagR=1) or disables (bitReverseFlagR=0) bit reversal of output.

twidCoefRModifier: u32

< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table.

pTwiddleAReal: *const float32_t

< points to the real twiddle factor table.

pTwiddleBReal: *const float32_t

< points to the imag twiddle factor table.

pCfft: *mut arm_cfft_radix4_instance_f32

< points to the complex FFT instance.